Hot-air furnace



Mmh 24, 1925.

lot

v. E.`HuGoN|oT HOT AIR FURNACE Filel may A51, 192s signed fr c buildings;

yPirenei Mar. 24, 1925.

1,531,251 1?ATENT--oF1=1c1a:-.

vIcTonnHUeoNIom, ors'ifnoursf, MISSOURI, nssreivon To surnnivrn HEATER VAnn VENTILATING CORPORATION, or s'r.'LoUIs,-MrssoUR-1, A CORPORATION or Mis- V soURI. p

applicati@L md may 31,

To all whom it may concern.' u

Be it knovvn thatl, Vieron E. l-IUGoNio'r, a citizen of thej United States, andk resid ing at St; Louis,fState`V ofMfissou'rig 1 have invented the new and. useful Improvement in'Hot-Air `Furnaces, 'ofwhich the followingis alspecifcation.

.This invention relates to heating appa'- rauisr, andr moreparticularly'te1 furnaesfdel; 'heating Comparativeiy large In order w heatffariy urge buildings, geen asseii01s,audit am au, seeiniteratively?,ingeheaun y, m nv ordene' rake cartier the D fregi/ure;

ments the widest." weather habi with; When a; heating" installatin'f is made which is large enough totaler care ofthe extremelymcold Weather requirements, the' normal yheating requirement'swill-` he 'consid'- eraloly less Vthan the" fullI capacity of the plant.v Furthermore 'in comparatively Warm weather," sucha'sfis r'e'quentlymet Within some' climates when it` isf'too cold to allow the building to he Without: heatl'andy not yet cohl'enoughv to ,require more than slight heating toprc'vde comfert, such a large heating plant must he' operated at' ay very low efficiency.' Ilnder thefse @conditions a Smau fire 'must be kept in @flange furnace', andy under f such conditios'- it is" impossible to prevent` afv considerable vva'ste dffjfuel; VFurtherniore itisoft'en nearly' impossiblejto prevent overheating" thek building 'in' 'order tolreep a suiicient iire tofm'aintainthe plant in operation. f

One oi" the 4objects' of this invention, therefA fore, isftol provide ya heatingv` plant of which the heating capacity-is variable so that the plant maybe operatedfatv a high" efficiency over a Wide rangeof" outside temperature.

Another object yof ,thisV invention is-to pro# vide Va plantin which a small fire may he `efliciently operated at times When a small amount of heat is requiredbut iiif'Which theheating capacityV may he increased to meet increased requirements.

Another object of this invention is to provide a plant having a lseries of heatingr units which may'lhe put into operation. progres sivelyfin accordance with the heating, requirements. ,i f Further objects will appear from thefde- H'OTLAIR FRNACE.

192s. serial No. 642,589.

tail description taken in connection withthe accompanying drawing, in which Figure l is a vertical longitudinal secti'onof a heating plant Aembodying this invention; and Figure 2 isa horizontal lsection of the saiii; y

In; ac'cordancevith this invention a heat ing kplant is provided vhi'ch Cdinpiises'f ali elongated casingr l which may helof nietal or other suitable? material and VvvhicliAA niafy li' lifuetl vvi'tlrl suitable heat'iri'siilati-hg? AIii-w te'iallso" toi prevent' the loss`r ofheat h5* 'aliatih iloi'i-lthe casing; Wilthiiiftli cas ingV l 'a seriesofheating* units-2 1s arr'aiigh each unit being spaced from* th'e'- Wall-s 'of the casing so asto provide a space around tlieunit for circulation of air there'arouhd. These heaters are arranged in a. row or in tandemV formation. Between the heatersQ vertical partitions 3 are; arrangedso as to divide they casing into a series of compartments, each containing a heatingy unit; Thesel partitions terminate alternately short ofthe topand hott'omlof the casing. There Y arejthus provided openings o'r'passages 4 and 5 connecting adjacent compartments so that v theair may pass Vtrom onecompartnient to another throughthese'opeiiingsi' YA cold air ,inlet 6 is provided at one ,end-of the casing-and a hot air outlet 7 is provided'at the other end. A fan or blower Sfmay he provided either at the inlet or at tlieoutlet so'as to inducen forced draftthrough and along the casing.

lnthe operation oi this device the fan 8 may beoperated to induce a draft of air through the casing. Thisvair enters at the inletI 6' and passessnccessi'veb7 through the compartments formed by the partitions 3 and out at the outlet-'7 to the rooms oi the building rwhich are to he heated. The partitions serve to guide the air so as to pass the saine in contact with the heating sur- `faces of the various heating unitsl succesappreciated' that Without these partitions the air. would pass horizontally' along the casing and around the heaters. It is easy to see that in such a case the entire heating surfaces of every unit would not be etliciently utilized. The air would take a diagonal course from the lower `part of the casing at the inlet to the upper part of the casing at the outlet passing in comparatively straight stream lines past the heating units. Each unit would, therefore, provide a. shield for the one behind it so as to prevent the air from coming in contact with the shielded surface. There would thus be formed on eachheating unit a protected zone practically out of contact with the circulating air. The effect of this would be to produce uneven heating of the heaters, those parts in contact with the air being cooled more than the shielded parts so that there would be serious danger of overheating the latter parts. The arrangement in which lthe air is passed vertically over the heating surfaces insures that each heater will be brought uniformly into contact with the air which may circulate about all the surfaces as the air passes upward or downward through each compartment.

When this plant is operated during comparatively warm weather, it may be necessary to fire only one of the heaters 2. n that case that unit which is nearest to the outlet 7 would be first put into use. lVhen operating in this way the cold air entering at the inlet 6 would pass first over the inactive units and last over the active unit before being delivered to the rooms to be heated. If any other unit were put into operation first, the heated air would have to pass over a cold unit in its subsequent travel to the outlet 7, so that a chilling effect would be obtained which would be undesirable. As the weather grows colder, successive units may be put into use to provide additional heating capacity. As many units may be then put into operation as may be necessary to properly heat the building. The units are put linto use progressively from the outlet to the inlet end of the casing so that none of the chilling effec-t above mentioned will be met with.

It will be. evident that this invention provides a heating plant of which the capacity may be adjusted to suit the heating require- -ments. l ust as many units as are necessary may be put into operation as each unit is separately fired, a good fire being maintained in eac-h so that the highest efficiency in the use of fuel Vmay be maintained. Keeping a good fire will also insure more efficient combustion and considerably less smoke. lt will be noted further that with a plant embodying this invention adequate capacity may be installed to take care of heating requirements in the most severe weather so that the plant may be operated during such severe weather without destructively overheating the unit-s. At the same time the units are small enough so that by the operation of a less number thereof the requirements for mild weather may be taken care of at a high efficiency of operation.

lt is obvious that various changes may be made in details of construction without departing from the spirit of this invention; it is, therefore, tobe understood that this invention is not to be limited to the specific details shown and described.

Having thus described the invention, wha is claimed is:

l. A hot air furnace comprising, an elongated casing, a series of air heaters arranged in tandem along said casing and spaced therefrom and relatively so as to provide an air heating space, a cold air inlet at one end of said casing, a hot air outlet at the other end of said casing, and partitions in said casing and between said heaters constructed and arranged to guide the air successively in contact with the heating surfaces of the successive heaters, whereby said heaters may be brought into use progressively from the outlet to the inlet ends of said casing in accordance with the heating requirements.

2. A hot air furnace comprising, an elongated casing, a series of air heaters arranged in tandem along said casing and spaced therefrom and relatively so as to provide an air heating space, a cold air inlet at one end of said casing, a hot air outlet at the other end of said casing, and vertically arranged partitions in said casing and between said heaters and terminating alternately short of the top and the bottom thereof in order to guide the air successively in contact with the heating surfaces of the successive heaters, whereby said heaters may be brought into use progressively from the outlet to the inlet ends of said casing in accordance with the heating requirements.

3. A hot air furnace comprising, an elongated casing, a series of air heaters arranged in tandem along said casing and spaced therefrom and relatively so as to provide an air heating space, a cold air in` let at one end of said casing, a hot air outlet at the other end of said casing, partitions in said casing and between said heaters con structed and arranged to guide the air successively in contact with the heating surfaces of the successive heaters, and means for causinga forceddraft along said casing from the inlet to the outlet thereof, whereby said heaters may be brought into use progressively from the outlet to the inlet ends of said casing in accordance with the heating requirements.

fl. A hot air furnace comprising, an elongated casing, a series of air heating units arranged in tandem along said casing lil) and spaced therefrom and relatively so as let at the other end of said casing, and partii tions in said casing and between said units constructed and arranged to provide a plurality of heating compartments arranged in series and each containing a heating unit, and through which compartments the air may be passed successively in contact with the heating surfaces of the units therein,

5. A hot air furnace comprising, an elongated casing, a series of air heating units arranged in tandem along said casing and spaced therefrom and relatively so as to provide an air heating space7 a cold air inlet at one end of said casing, a hot air outlet at the other end of said casing, partitions in said casing and between' said units constructed and arranged to provide a plurality of heating compartments arranged in series and each containing a heating unit, and through which compartments the air may be passed successively in contact with the heating surfaces of the units therein, and means Vfor causing a forced draft along said casing from the inlet to the outlet thereof, whereby said units may be brought into use progressively from the outlet to the inlet ends of said casing in accordance With the heating requirements.

ln testimony whereof I aflix my signature 'this 26th day of May, 1923. f

VICTOR E. HUGONIGT. 

